<template>
  <div class="count">
    <h2>当前求和为：{{$store.state.sum}}</h2>
    <select v-model.number="n">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <button @click="increment">+</button>
    <button @click="decrement">-</button>
    <button @click="incrementOdd">当前和为奇数再加</button>
    <button @click="incrementWait">等一等再加</button>
    <button @click="incrementServer">联系服务器再加</button>
  </div>
</template>

<script>
  export default {
    name:'Count',
    data() {
      return {
        n:1
      }
    },
    methods: {
      // 点击【+】的回调
      increment(){
        this.$store.commit('JIA',this.n)
      },
      // 点击【-】的回调
      decrement(){
        this.$store.commit('JIAN',this.n)
      },
      // 点击【当前和为奇数再加】的回调
      incrementOdd(){
        this.$store.dispatch('jijia',this.n)
      },
      // 点击【等一等再加】的回调
      incrementWait(){
        this.$store.dispatch('dengjia',this.n)
      },
      incrementServer(){
        this.$store.dispatch('fuwujia')
      }
    }
  }
</script>

<style scoped>
  .count {
    background-color: skyblue;
    padding: 10px;
  }
  button {
    margin-left: 10px;
  }
</style>